Rochdale scored three second-half goals to cancel out Chesterfield's half-time lead and secure a 3-1 first-round EFL Cup victory at the Crown Oil Arena.

Paul McGinn gave the visitors a 30th-minute lead, but Ian Henderson and Andy Cannon both struck shortly after the break before substitute Nathaniel Mendez-Laing confirmed Dale's progress.

Chesterfield almost took a third-minute lead, when Ian Evatt headed a Jay O'Shea free-kick too close to Dale goalkeeper Josh Lillis, but got their reward on the half-hour in stunning style.

Chesterfield should have been ahead as early as the third minute when Ian Evatt escaped marker Calvin Andrew to meet Jay O'Shea's free-kick, the defender guiding a downward header goalwards but too close to goalkeeper Josh Lillis.

O'Shea clever play teed up an onrushing McGinn who took a touch before unleashing a wonderful strike from 25 yards into the top corner of Lillis' net.

Dale were on level terms within two minutes of the restart, Henderson making the most of a free header as he guided Cannon's free-kick wide of Fulton. Dale were ahead in the 53rd minute when McDermott's stab towards goal was turned into the net by Cannon at close range.

Rochdale wrapped up the win in the 78th minute when Andrew's delivery across the face of goal was turned into the net by Mendez-Laing.